Hello,
are you still looking for a freelancer in this field?
I recently worked with a media project coordinator based in Berlin and she's capable of doing such a job, as she works in the industry, specialised in doing/placing subtitles in various languages (german, english, spanish) for a big french tv station that also operates in Germany, transcribing,...
Let me know, how tight your schedule is and I'll connect you both.
Jérôme